DOI: 10.1002/2017JD026817
论文题名: Wavelet spectra within a forest subcanopy under different wind directions and stabilities
作者: Russell E.S. ; Liu H. ; Lamb B.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2017
卷: 122, 期: 16 起始页码: 8399
结束页码: 8409
语种: 英语
英文关键词: complex terrain
; eddy covariance
; forest subcanopy turbulence
; global wavelet spectra
英文摘要: Vertical structure of turbulence within a forest canopy is complex as a result of interactions between the flow dynamics, stability, and vegetation. It remains unclear as to how the combination of the changing stability, flow conditions, and upstream obstacles alters vertical variations in turbulence structures within canopy. Here we used data from three sonic anemometers within the forest canopy to study the interplay between these factors. The turbulence structure depended upon the wind direction and stability similarly as particular stability conditions were primarily associated with certain wind directions over the sloped terrain. The general shape of the spectra varied with the depth into the canopy, creating a perceived spectral gap near the surface that was not observed near the top of the canopy. The strength of the division between smaller scales and larger scales increased under more stable conditions as the different layers were unable to couple, limiting the passage of energy through the canopy. ©2017. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62595
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Laboratory for Atmospheric Research, Department of Civil and Environmental Engineering, Washington State University, Pullman, WA, United States
Recommended Citation:
Russell E.S.,Liu H.,Lamb B.. Wavelet spectra within a forest subcanopy under different wind directions and stabilities[J]. Journal of Geophysical Research: Atmospheres,2017-01-01,122(16)